CAN Communication Line Check
- IG Key "OFF".
- Disconnect BSD ECU (LH, RH) connector and TCU connector.
- Measure the resistance between CAN-HIGH terminal of BSD ECU (LH, RH) harness connector and CAN-HIGH terminal of TCU harness connector.
- Measure the resistance between CAN-LOW terminal of BSD ECU (LH, RH) harness connector and CAN-LOW terminal of TCU harness connector.
Specification : Below 1Ω
- Is the measured resistance within specification?
YES
- Substitute with a known-good "TCU" and check for proper operation. If the problem is corrected, replace "TCU" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Substitute with a known-good "BSD ECU" and check for proper operation. If the problem is corrected, replace "BSD ECU" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check for short in harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.